Engine fuel



Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE- NILS HARRYGULLANDEB, mo, SWEDEIT, ASSIGNOR TO THE FIRM G. & B. Y

GLEIENTSON, OF HQLMO, SWEDEN ENGINE FUEL Ho prawing. Application filedFebruary 28, 1981, Serial No. 518,595, and in Sweden February 14, 1881.

In the manner of performing this upper lubrication as hitherto employed,the lubr1-.

eating action has been found to be very small only, as the lubricatingoil used has either been so highly mobile, or light, that itslubrieating capacity when contacting with the interlor hot parts of-theengine has been re- 2 duced substantially to nothing, or else, whenusipg heavier oils, their intermixingxvith the engine .fuel has beenrendered diflicult in a very high degree, and besides such heavy oilshave given rise to hard deposits of carbon.

forming residues of the combustion. These residues have ratherincreased, instead of reduced, the friction and wearing in the engine,and they have caused a clogging of the piston 1 rings and valves. By theaddition of fat oils or fatty acids to the actual lubricating component,or components, added to the engine fuel, it has been found that animproved lubricating action may be obtained due to saponification bymeans of the small quantity of water formed at the combustion Within thecombustion chamber, but fat oils or fatty acids form substantial amountsof friction increasing and clogging residuesof combustion, and thereforethey have been found unsuitable for upper lubrication purposes.

Now it has been found, however, according to the present invention, thata goodlubrication of theupper portions of the cylinders and pistons, aswell as of'the valves, and simultaneously a comparatively soot-freecombustion is obtainable if a mixture of a l bricant oil and smallquantities of hydr0gena-' tiori products of phenol and naphthalene areadded \to the engine fuel. The hydrogenated formation of thisemulsion-and facilitates the same. 1

The aforesaid advantageous technical result is only obtained in case allof the thre substances, i. e. both lubricating oil and h drogenatedphenol and hydrogenated nap thalene are added to the fuel. Therefore,the invention refers only to the addition of a mixture comprising all ofthese three substances to the conventional engine fuel, but the additionof only one, or perhaps two, of 55 :aid substances is not included inthe inven- Ewample :100 parts of a common engine fuel is admixedwith0.25 parts of a mixture consisting of about 30% of a highl mobilelubricant oil (the viscosity being a out 4-6 degrees of Engler at atemperature of 20? C.) about 35-40% of tetra hydro-naphthalene and about25-30% of hydrogenated phenol.

In this manner, a homogenous and highest grade engine fuel will beobtained, such fuel having lubricating properties, and is combustiblepractically without any rests of a carbon. 1

By using the aforesaid additional components together with, or in, theupper lubricating oil, or engine fuel, for the purpose of saponificationof the lubricant proper, so as thereby to obtain an improved lubricatingaction, no hard or solid residues of combustion are formed. Besides nodeposits of carbon or oil pitch will arise between the piston rings andon the valve'spindles, as otherwise, would be the case due to thecombustion of the lubricant proper, but such deposits will be solved, orsubdivided, in such a manner that they will escape together with theexhaust. gases.

' Hydrogenated phenol and hydrogenated naphthalene are easily intermixedboth with the oil, or oils,used for upper lubrication purposes, and withall of the common engine fuels now in use, and with regard to the latterthey form besides a valuable agent of homogenization forenginefuelshaving an incorporated component of different kinds ofspirits.

What I claim and desire to secure by Letters Patents is 2-- In aconventional engine fuel, the addition of a mixture consisting ofsuitablelubricating oil, hydrogenated naphthalene and hydrogenatedphenol.

In testimony whereof I have signed my name to this specification.

' NILS HARRY GULLANDER.

